Metal edge box staying machine



Sept. 28, 194-3. w, 3, STANGER I 2,330,756

METAL EDGE BOX STAYING MACHINE Filed Nov. 24, 1941 2 Sheets-Sheet 1M/VEA/IWIF rv/r/msi' 4rramvsns'.

Sept. 28, 1943. w, D. STANGER" 2,330,756

METAL EDGE BOX STAYING MACHINE Filed Nov. 24', 1941 2 Sheets-SheetPatented Sept. 28, 1943 UNITED" STATES PATENT; OFFICE M I I i' fassoa ss o METAL BOX STAYING MACHINE William ,1). Sanger, deceased, late ofSeaside Park, N. J.,'by Esther M. Stanger, executrix,

Seaside Park, N. J., assignor to'Louis Wolf, El-

' kins Park, Elias Wolf; Dresher, Howard A. ,Wolf, JenkintowmandWalterL.Wolf, Rydai, Pa., co- 9 partners, trading as-National Metal Edge BoxGompany, Philadelphia, Pa. Application November 24,1941, Serial No.420,192

This invention relates to that type of box or other article, usuallyconstructed of cardboard, in which meeting edges of adjacent walls orsections of the article are permanently secured together and (or)reinforced, by means of a metal strip overlapping such edges. Said metalstrip, as most usually constructed, has near each of its oppositelongitudinal edges a row of holes with prongs extending from theperipheries ;of the holes and penetrating the cardboard and upset so asto be embeddedin the material of the cardboard or clinched on thereverse side, and an intermediate row of holes extending along thelangitudinal center of the strip and which extends over the adjacentedges of adjacent sections of the article. The strip is applied to thearticle by positioning it in a die or hammer, which is moved toward ananvil (to which said sections have been applied) to bend the strip alongits longitudinal edge against the adjacent faces of the sections andforce the prongs into or through the material and upset and clinch themas above described. The adjacent faces of the anvil are smooth flatsurfaces corresponding to the shape of the article, to be stayed and thedie recess has smooth flat surfaces corresponding to the smooth fiatsurfaces of the anvil.

Other metal strips or stays are provided with only a single row offasteners. In other metal strips the fasteners of a row are staggered.Other metal strips are not provided with a row of perforations alongthat longitudinal section of the strip which extends over the meetingedges of the walls or sections of the article to be stayed.

An article the meeting edges of which are joined and reinforced as abovedescribed is open to the objection that, inthe bending of the stripalong its longitudinal center, that is, directly through the centrallongitudinal row of perforations (if the strip contains suchperforations), the metal surrounding and immediately adjacent suchperforations is so distorted that the reinforced corner is decidedlyrough-suinciently so as to scratch varnished surfaces and prevent freetelescoping, such, for example, as the sliding of a box lid on and off abox. body. The object of the invention is to completely eliminate thisroughness.

The object of this invention is accomplished by the modifiedconstruction of die and anvil hereinafter described and illustrated inthe accompanying drawings, wherein Fig. 1 is a perspective view of thedie which cooperates with the anvil to bend the metal strip over twoangularly disposed sections of an-article and force prongs of the stripintofastening engagement with the material. Fig. 2 is an end viewofthedieand anvil, with the adjacent sections of the article shown insection. Fig. 3 is an end view, and-Fig. fl is a perspective view, ofthe two sections of the article. after their union.

Fig. 5 is a side elevation of' box, staying machine.

In Fig. 5 is shown a stayingmachine ofthe type towhich this inventionmay be applied." It comprises a frame It on'wh'ich is mounted drivingmeans m having a connection (not shown) with a lever it connected by alink 0 with a diecarrier p carrying a die 0. The die carrier and die aremovable up and down on the frame is by actuating the treadle r connectedto the driving mechanism. The anvil a is fixed to the frame. The metalstrip e is fed to the die 0 and is held in longitudinally extendinggrooves therein, preparatoryto the staying operation, as shown in Fig.2. For a further description of machines of this type, reference ismade'to the Stokes Patent No. 793,549, issued June 27, 1905; the Jacksonand Horton Patent No. 1,192,201, issued July 25, 1916; the 'Walz andMorris Patent No. 1,346,573, issued July 13, 1920; the Stanger PatentNo. 1,918,922, issued July 18, 1933; and the Wismer Patent No.2,070,767, issued February 16, 1937.

To the anvil a is applied the two pieces of material f, 1, which are tobe secured together. The edges of the pieces meet at the ridge or cornerof the anvil. The corner of the anvil is provided with a longitudinallyextending recess d. The bottom of the die recess is provided with alongitudinally extending rib b. When the die 0 is moved downward againstthe material on the anvil, the projections on the strip e, as heretoforedescribed, penetrate the material and secure together the meeting edgesof the box sections f and 1. At the same time the rib b presses themeeting edges of the sections ,f, ,1" into the groove (1, draws togetherthe stayed edges, and so bends in and buries any rough edges of theperforations that may be formed in the operation of bending the metalstrip as to produce, along the line of perforations, a perfectly moothsurface.

The rib or blade b in the die recess may be made integral with the die,but it is preferred to make it as a separate member and confine it in aslot in the die. The rib b need not be shaped as shown, its shape,thickness and size being variable to adapt it to different sizes andforms of metal stays. It is not necessary in all cases to "byllliett'ers Patent is 1 3 staying of box corners, but also to thestaying of p the meeting edges of any article, although it finds itsmost useful application tostaying the meeting edges of sections ofarticles which meet one another at an angle.

ing recessed along the corner or apex thereof for reception of the rib.

2. Means for staying the meeting edges of the walls of an article by theapplication thereto of a metal stripprovidedwith fastening prongs andwith a 'row'of perforations; said means comprising an anvil having twofaces extending at an "angle to each other, a die having a recess whosefaces extend at the same angle to each other and Even Where the metalstr'ipis unprovided with a row of perforations extending over then'ieeting edges of theangularly disposed sections o'f ithe article to hestayed, it is advantageous to use this invention; and it shouldtherefore be understood that, except in those claims which are otherwiseexpressly limited, the invention is notlimited in its application tooperating upon any iparticulartype of metal stay.

' 'What is claimed. and d sired to be protected 1; Means for staying theIne'etingedegs or the angularly disposed walls of an article by the"application thereto of a metal strip and bending the same around. saidmetin g edges, said means "i dmprising an "anvil having two' facesextending at "an angle to each o'ther, a-die having a recess whose facesextend at the same angle to each other and whichafre complementary totheanvil faces, and a rib' extending longitudinallyalong the bottom of'th'e 're'cess oi the 'die, the 'anvi'lbecomplementary to the anvilfaces, and a rib extendinglongitudinally along the bottom of the recessof the die, the anvil being recessed along 'the corner Ora'peX thereoffor reception of the I .3. {Means for staying the meeting edges ofartic'les by theapplication thereto of a metal strip provided withprongs and with a row of perfora- -tions, said means'comprising an anviladapted .toholdadjacent sections of the article with their edgessubstantially meeting, a die having a shape complementary to that (ofthe anvil and adapted, in its mov'emel'it "toward the :anvil, Eto forcethe prongs 0f -the strip into lfastening engagement withthe sections ofthe :article, ?and a rrib, "on

the striking iface of the :di'e, adapted to :alignwith 'said row ofperforations, rt'he'ranvil-having a longitudinally sextendingigraoveadapted ito align with said row "of perforations and with the rib on thedie.

' ESTHER'IMSTANGER,

Executria: of like .Estatecoj William D. Stringer,

Deceased.

